Pith Number

pith:YNBSERW3

pith:2013:YNBSERW3DWQKYGPM2S6IYMOMDT

not attested not anchored not stored refs pending

Metal-Poor Stars Observed with the Magellan Telescope II. Discovery of Four Stars with [Fe/H] < -3.5

Anna Frebel, Catherine R. Kennedy, Norbert Christlieb, Rafael M. Santucci, Silvia Rossi, Timothy C. Beers, Vinicius M. Placco, Young Sun Lee

arxiv:1311.5855 v1 · 2013-11-22 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YNBSERW3DWQKYGPM2S6IYMOMDT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:46:06.871790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3432246db1da0ac19ecd4bc8c31cc1cfc094baae89d41058d4aabd1b2baf638

Aliases

arxiv: 1311.5855 · arxiv_version: 1311.5855v1 · doi: 10.48550/arxiv.1311.5855 · pith_short_12: YNBSERW3DWQK · pith_short_16: YNBSERW3DWQKYGPM · pith_short_8: YNBSERW3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YNBSERW3DWQKYGPM2S6IYMOMDT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c3432246db1da0ac19ecd4bc8c31cc1cfc094baae89d41058d4aabd1b2baf638

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce8a176cbe346e3addb53e9c9da7488bb7e598a424ddf8e8cf9aa5ff689a5958",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-22T19:49:15Z",
    "title_canon_sha256": "7fc0cf2fa1cdb0e33bcefc59e0044bc2366774934b3c7efce0ece62b1512ff04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5855",
    "kind": "arxiv",
    "version": 1
  }
}